[China Aluminum Network] Designed a reasonable sash ratio and orientation. In general, the heat transfer coefficient of a window is greater than the heat transfer coefficient of an outer wall with the same orientation and the same area. Therefore, the amount of heat energy consumed by heating increases with the proportion of window and wall. Under the condition that the lighting and ventilation are allowed, the ratio of controlling windows and walls is more effective than setting insulation curtains and window panels. That is, the smaller the window wall area is than the design, the smaller the heat loss and the better the energy-saving effect. The loss of heat is also related to the orientation of the outer window. The solar radiation intensity and the sunshine rate in the south and north direction are high, and the solar radiation heat obtained by the window is more.
Use energy-saving materials. Due to the development of new materials, the main components of the window (frame materials, glass, seals, hardware accessories, sunshade facilities, etc.) have made rapid progress. The use of energy-saving materials is an effective way to save energy in aluminum-clad doors and windows. Box material: The window profile accounts for about 15% to 30% of the area of ​​the outer window opening, which is another weak link in the energy loss of the outer window of the building. Therefore, the selection of the window profile is also crucial. At present, there are many types of energy-saving window frames, such as: aluminum heat insulation, heat-resisting steel, plastic profiles, aluminum alloy doors, windows, and aluminum. Among them, the heat-insulating aluminum material has better energy-saving effect and is widely used. It not only retains the advantages of aluminum profiles, but also greatly reduces the heat transfer coefficient of aluminum profiles. The heat-insulating aluminum material uses the thermal bridge (cold bridge) technology in the section of the aluminum alloy profile to divide the profile into two parts, inner and outer. Hot aluminum is also called aluminum alloy doors and windows.
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